Merge pull request #2430 from segmentio/DOC-393-IF

Adding note about cookie compatibility/utility plugin [DOC-393]

Author: forstisabella

src/connections/sources/catalog/libraries/website/javascript/upgrade-to-ajs2.md

@@ -50,7 +50,7 @@ If the source you intend to upgrade uses the in-domain instrumentation as well a
 
 ### Relying on Analytics.js Classic's `ajs_anonymous_id` cookie format  
 
-Analytics.js 2.0 removes inbuilt quotes from cookie values, resulting in a different format for the `ajs_anonymous_id` value when compared to Analytics.js Classic.  Though you can retrieve cookie values with [standard supported functions](/docs/connections/sources/catalog/libraries/website/javascript/identity/#retrieve-the-anonymous-id), you'll need to configure your environment to accept the new format if your implementation relies on accessing the cookie value directly.
+Analytics.js 2.0 removes inbuilt quotes from cookie values, resulting in a different format for the `ajs_anonymous_id` value when compared to Analytics.js Classic.  Though you can retrieve cookie values with [standard supported functions](/docs/connections/sources/catalog/libraries/website/javascript/identity/#retrieve-the-anonymous-id), you'll need to configure your environment to accept the new format using the `utility` [plugin](/docs/connections/sources/catalog/libraries/website/javascript/index/#example-plugins) if your implementation relies on accessing the cookie value directly. 
 
 ### Using a strict content security policy on the page